package com.itheima.sh.a_filter_01;

import javax.servlet.*;
import javax.servlet.annotation.WebFilter;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

@WebFilter("/demo02.html")
public class LifeDemo01Filter implements javax.servlet.Filter {

    public LifeDemo01Filter() {
        System.out.println("无参构造");
    }

    public void destroy() {
        System.out.println(
                "destory...."
        );
    }

    public void doFilter(ServletRequest req, ServletResponse resp, FilterChain chain) throws ServletException, IOException {
        HttpServletRequest request = (HttpServletRequest) req;
        HttpServletResponse response = (HttpServletResponse) resp;

        System.out.println("dofilter");
        chain.doFilter(request, response);
    }

    public void init(FilterConfig config) throws ServletException {
        System.out.println("init......");
    }

}